Phillip, buried in Teli's very informative article is a great tip and possibly the one you are looking for. It's easily overlooked and I had to ask Teli how to do it.
It's so simple you'll hit yourself in the head. (Or at least I did.)
If you are using WordPress there is a More button in the "write a post" editing panel. That will break your post wherever you insert it and add a "continue reading" link to read the full post.
What I've been doing lately, that I think is smart, but maybe not?
For the 1st day or 2 a new blog entry is up I leave the full post on the index page so its easier for people to read the whole thing and for spiders to read it all. Then a couple days later I go in and break it with the more tag after a couple paragraphs to make it easier for people to scan lots of articles on my index page.
Go to my blog
5 Star Affiliate Blogs. Scroll down the 1st super long one or 2 and then you will see shorter ones with a link that says "Read the rest of this entry »". That's where I have used the more button.
What I like about using the more button for each post instead of a plug-in is that, based on the content of each post, I can decide the best place to "break" it.
Hope this helps and best of luck!